Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼

Delete All
ON OFF
ALLDATASHEET.ES

X  

Preview PDF Download HTML

NB4L6254MNG Datasheet(PDF) 8 Page - ON Semiconductor

No. de Pieza. NB4L6254MNG
Descripción  2.5V / 3.3V Differential LVPECL 2x2 Clock Switch and Low Skew Fanout Buffer
Descarga  11 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
Logo 

NB4L6254MNG Datasheet(HTML) 8 Page - ON Semiconductor

 
Zoom Inzoom in Zoom Outzoom out
 8 / 11 page
background image
NB4L6254
http://onsemi.com
8
Example Configurations
Figure 7. 2 x 2 Clock Switch
CLK0
CLK1
SEL0
SEL1
System A
System B
3
3
SEL0
SEL1
Switch Configuration
0
0
CLK0 Clocks System A and
System B
0
1
CLK1 Clocks System A and
System B
1
0
CLK0 Clocks System A and CLK1
Clocks System B
1
1
CLK1 Clocks System B and CLK1
Clocks System A
Figure 8. 1:6 Clock Fanout Buffer
CLK0
CLK1
SEL0
SEL1
0
0
Figure 9. Loopback Device
System−Tx
CLK0
SEL0
SEL1
QBn
CLK1
Transmitter
QAn
System−Rx
Receiver
SEL0
SEL1
Switch Configuration
0
0
System Loopback
0
1
Line Loopback
1
0
Transmit/Receive Operation
1
1
System and Line Loopback
APPLICATIONS INFORMATION
Maintaining Lowest Device Skew
The NB4L6254 guarantees low output−output bank skew
at 50 ps and a part−to−part skew of 250 ps. To ensure low
skew clock signals in the application, both outputs of any
differential output pair need to be terminated identically,
even if only one output is used. When fewer than all nine
output pairs are used, identical termination of all output pairs
within the output bank is recommended. If an entire output
bank is not used, it is recommended to leave all of these
outputs open and unterminated. This will reduce the device
power consumption while maintaining minimum output
skew.
Power Supply Bypassing
The NB4L6254 is a mixed analog/digital product. The
differential architecture of the NB4L6254 supports low
noise signal operation at high frequencies. In order to
maintain its superior signal quality all VCC pins should be
bypassed by high−frequency ceramic capacitors connected
to GND. If the spectral frequencies of the internally
generated switching noise on the supply pins cross the series
resonant port of an individual bypass capacitor, its overall
impedance begins to look inductive and thus increases with
increasing frequency. The parallel capacitor combination
shown ensures that a low impedance path to ground exists
for frequencies well above the noise bandwidth.
Figure 10. VCC Power Supply Bypass
VCC
NB4L6254
33 − 100 nF
0.1 nF
VCC


Html Pages

1  2  3  4  5  6  7  8  9  10  11 


Datasheet Download




Enlace URL




Privacy Policy
ALLDATASHEET.ES
Does ALLDATASHEET help your business so far?  [ DONATE ]  

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn